Sale 1:

https://backpack.tf/profiles/76561198267364698#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198089299416#!/compare/1565481600/1566086400

Bulky / high(?)

sale 2:

https://backpack.tf/profiles/76561198089299416#!/compare/1567728000/1568160000

https://backpack.tf/profiles/76561198034268412#!/compare/1567728000/1567814400

Sold for 11 keys

sale 3:

https://backpack.tf/profiles/76561198055867856#!/compare/1566000000/1567814400

https://backpack.tf/profiles/76561198115691546#!/compare/1567728000/1567814400

Sold for Aces Cosa

use there

Sale 4:

https://backpack.tf/profiles/76561198164597175#!/compare/1543190400/1566086400

https://backpack.tf/profiles/76561198082350482#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198101300189#!/compare/1566086400/1566172800

https://backpack.tf/profiles/76561198342885380#!/compare/1566000000/1566172800

gambling

Sale 5:

https://backpack.tf/profiles/76561198388675357#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198973894950#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198154782261#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198063803737#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198973894950#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198372681544#!/compare/1567296000/1567123200

gambling then QS(?)

Sale 6:

https://backpack.tf/profiles/76561198372681544#!/compare/1572652800/1572739200

https://backpack.tf/profiles/76561198006544512#!/compare/1572566400/1572652800

QS

sale 7:

https://backpack.tf/profiles/76561198050561626#!/compare/1560643200/1566604800

https://backpack.tf/profiles/76561198225715416#!/compare/1566518400/1566604800

Sold for CPS Kiss King

use there, few sales

Sale 8:

https://backpack.tf/profiles/76561198225715416#!/compare/1568160000/1568246400

https://backpack.tf/profiles/76561197994587943#!/compare/1568073600/1568246400

Bulk

sale 9:

https://backpack.tf/profiles/76561198100536152#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198002757046#!/compare/1567036800/1567123200

QS

sale 10:

https://backpack.tf/profiles/76561198002757046#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198258264645#!/compare/1567036800/1567123200

Sold for ~12 keys

sale 11:

https://backpack.tf/profiles/76561198258264645#!/compare/1572134400/1572220800

https://backpack.tf/profiles/76561198068356593#!/compare/1572134400/1572220800

https://backpack.tf/profiles/76561198286784386#!/compare/1572134400/1572220800

untrace / gambling?

Sale 12:

https://backpack.tf/profiles/76561198286784386#!/compare/1572566400/1572652800

https://backpack.tf/profiles/76561198012537041#!/compare/1572566400/1572652800

https://backpack.tf/profiles/76561198950621219#!/compare/1572566400/1572652800

https://backpack.tf/profiles/76561198212086448#!/compare/1572480000/1572652800

gambling / untrace

Sale 13:

https://backpack.tf/profiles/76561198149611547#!/compare/1566086400/1566172800

https://backpack.tf/profiles/76561198011321852#!/compare/1566000000/1566086400

QS

sale 14:

https://backpack.tf/profiles/76561198975648195#!/compare/1566518400/1567296000

https://backpack.tf/profiles/76561198137163870#!/compare/1567209600/1567296000

Sold with negligible sweets for OF Tundra

tundra Mini:

https://backpack.tf/suggestion/5dca6aa66780722b4f3f9660

Suggestion for 20 keys

Sale 15:

https://backpack.tf/profiles/76561198137163870#!/compare/1572134400/1572220800

https://backpack.tf/profiles/76561198310264826#!/compare/1572134400/1572220800

sold for 11 keys

sale 16:

https://backpack.tf/profiles/76561198310264826#!/compare/1572220800/1572307200

https://backpack.tf/profiles/76561198123912038#!/compare/1572220800/1572307200

Sold for C9 Waxy + 3 keys

Waxy Mini:

https://backpack.tf/suggestion/5dca6fc7d38172065811c238

Suggestion for 10 keys

Total is 13 keys

sale 17:

https://backpack.tf/profiles/76561198123912038#!/compare/1572220800/1572307200

https://backpack.tf/profiles/76561198099685235#!/compare/1572220800/1572307200

Bulk

sale 18:

https://backpack.tf/profiles/76561198099685235#!/compare/1572307200/1572393600

https://backpack.tf/profiles/76561198106824903#!/compare/1572307200/1572393600

high....

sale 19:

https://backpack.tf/profiles/76561198106824903#!/compare/1572652800/1572739200

https://backpack.tf/profiles/76561198194519291#!/compare/1572652800/1572825600

Sold for 12 keys

sale 20:

https://backpack.tf/profiles/76561198194519291#!/compare/1572825600/1573171200

https://backpack.tf/profiles/76561198068828299#!/compare/1573084800/1573171200

Sold for 12 keys

Sale 21:

https://backpack.tf/profiles/76561198068828299#!/compare/1573171200/1573257600

https://backpack.tf/profiles/76561198828522414#!/compare/1573171200/1573257600

Sold for 13 keys (used to buy Lid)

Sale 22:

https://marketplace.tf/items/tf2/250;5;u57

$28.89 / $1.82 = 15.87 keys

Total sales @:

11, 11, 12, 12, 12, 13, 13, 15.87, 20 keys

buyers up to ~10 keys,

seller for 15 keys,

given the aging seller for 15,

calling 11 low,

15.87 high,

taking 12 - 13 keys.